CN202689911U

CN202689911U - Single draw cord driving device used for curtain

Info

Publication number: CN202689911U
Application number: CN 201220357161
Authority: CN
Inventors: 朱向荣
Original assignee: 李七妹
Priority date: 2012-07-23
Filing date: 2012-07-23
Publication date: 2013-01-23
Anticipated expiration: 2022-07-23

Abstract

The utility model discloses a single draw cord driving device used for a curtain. The device is characterized by comprising a rack, a winding drum, a draw cord, gears and a draw bar rack, wherein the draw bar rack comprises a draw bar with a fork entry which is horizontally arranged and a rack arranged at the upper end of the draw bar; a return spring is arranged between the rack and the draw bar rack or between a member which is fixedly connected with the rack and the draw bar rack; a baffle block is fixed on a draw cord on the fork entry which is horizontally arranged on the draw bar; the teeth on the rack are right angle teeth; the inclined side of the right angle teeth is located at the upper part; the right angle side is located at the lower part; the teeth on the corresponding gear are right angle teetch; the right angle sides of the right angle teeth on the gears are located at the upper part and the inclined sides are located at the lower part. Compared with the prior art, the single draw cord driving device provided by the utility model has the advantages of being simple in structure and convenient to operate, no need of occupying the space of an installation function member of the curtain, and capable of realizing bidirectional driving.

Description

A kind of curtain is with single stay cord drive unit

Technical field

The utility model relates to a kind of curtain member.

Background technology

Existing curtain, such as shutter, after putting down, need the tilting window blind blade, so that the interlobate gap of closing the interlobate gap of shutter fully or opening shutter, this action of prior art need to arrange another drive unit and finish, like this, not only complex structure, use very inconvenient, and, taken the space of the limited installation function member of curtain.

Summary of the invention

Goal of the invention of the present utility model is to provide that a kind of structure is simple, easy to operate, the installation function member space that need not to take curtain, can realize that curtain that two directions drive is with single stay cord drive unit.

The utility model is to realize like this, comprise frame, be arranged on the frame or be arranged on reel on the member that is fixedly connected with frame (such as the stay cord rotating disk box of the device of rotation driving of single dragline type), drive the stay cord that reel rotates, rotation be arranged on the frame or rotate arrange be with member that frame is fixedly connected with on and be positioned near the stay cord gear, be arranged on the frame or be arranged on member that frame is fixedly connected with on and the pull bar tooth bar that is positioned at the gear next door, the pull bar tooth bar comprises the pull bar with horizontally disposed prong, be positioned at the tooth bar of pull bar upper end, between frame and pull bar tooth bar or between the member that is fixedly connected with frame and pull bar tooth bar, be provided with returning spring, stay cord on the horizontally disposed prong of pull bar is fixed with block, tooth on the tooth bar is the right angle tooth, the hypotenuse of right angle tooth is positioned at the top, right-angle side is positioned at the below, tooth on the corresponding gear is the right angle tooth, and the right-angle side of the right angle tooth on the gear is positioned at the top, hypotenuse is positioned at the below.During use, the oblique pull rope makes block on the rope leave the horizontally disposed prong of pull bar, rotates by stay cord band movable reel, and reel discharges with wound thereon casement or with the curtain rope of curtain (such as shutter); When waiting the casement that discharges or reaching desired amplitude with the curtain rope of curtain (such as shutter), stay cord is swung back the upright position, block is positioned on the horizontally disposed prong of pull bar, spur by a small margin stay cord, mobile by a small margin by block pulling pull bar tooth bar, because when moving down, gear, the right-angle side of the right angle tooth on the tooth bar is relative, therefore, the rack drives gear rotates certain angle, and when moving on the pull bar tooth bar, the hypotenuse of two right angle teeth is relative, therefore, two right angle teeth slip over mutually, can not reverse by driven gear, so just the direction rotation of the scrolling opposite direction of energy driven gear edge and stay cord pulling reel, drive corresponding member and rotate (as drive the blinds upset on the shutter by the blinds stay cord, to realize the blinds folding).Owing to having adopted the pull bar tooth bar and at stay cord block being set, stay cord drive member having been rotated with opposite direction, thereby realize a member, the purpose of carrying out two operations.

Here, the amplitude of rotating in order to limit pull bar rack drives gear is provided with projection at the pull bar tooth bar, and the frame below projection is provided with positive stop.

For the pull bar tooth bar is moved in the vertical direction, be provided with arc-shaped notch on the pull bar below the tooth bar, the shape of arc-shaped notch is corresponding with the shape of gear side, because the effect of returning spring, under normal circumstances, wheel and rack is mutually non-touching. the positive stop on the pedestal is the roller that rotates along the rotating shaft on the pedestal, and roller leans against on the lateral surface of pull bar.Like this, under the guiding of roller and gear, the pull bar tooth bar can only move along vertical direction.

The utility model compared with the prior art, have advantages of the structure letter, easy to operate, the installation function member space that need not to take curtain, can realize that two directions drive.

Description of drawings:

Fig. 1 is structural representation of the present utility model;

Fig. 2 a is the overall structure schematic diagram of curtain of the present utility model;

Fig. 2 b is the use state diagram of volume of the present utility model when curtain is arranged;

Fig. 3 is that the utility model drives volume state diagram simultaneously;

Fig. 4 is the structural representation of the prong of pull bar gear;

Fig. 5 is the structural representation of device of rotation driving of single dragline type of prior art;

Fig. 6 is the structural representation of device of rotation driving of single dragline type of prior art;

Fig. 7 is the expanded view of the sleeve of Fig. 6;

Fig. 8 a is the driving device structure schematic diagram with pull bar tooth bar location structure;

Fig. 8 b is that the drive unit of stay cord when leaving behind the pull bar tooth bar uses state diagram;

Fig. 8 c for the pull bar tooth bar of leaving behind after, drive unit after stay cord shrinks back uses state diagram;

Fig. 9 is the drawing of site of the tie point of curtain on reel under the pull bar rack drives.

The specific embodiment:

Now in conjunction with the accompanying drawings and embodiments the utility model is done and is described in further detail:

Such as Fig. 1, Fig. 2 a, shown in Fig. 2 b, the utility model comprises frame 1, be arranged on be fixedly connected with frame 1 the pedestal of device of rotation driving 3 of single dragline type on reel 2, be arranged on the device of rotation driving 3 of single dragline type of driving reel 2 rotations on the frame 1, rotation is arranged on the gear 7 on the device of rotation driving 3 inboard pedestal external surfaces of single dragline type, be arranged on the pull bar tooth bar 4 on gear 7 next doors, pull bar tooth bar 4 comprises the pull bar 9 with horizontally disposed prong 8, be positioned at the tooth bar 10 of pull bar 9 upper ends, frame 1 or be fixedly connected with frame 1 pedestal and 4 of the pull bar tooth bars of device of rotation driving 3 of single dragline type be provided with returning spring 11, stay cord 12 at the device of rotation driving of the dragline type of 3 of the device of rotation driving of the horizontally disposed prong 8 of pull bar 9 and single dragline type is fixed with block 13, tooth 10a on the tooth bar 10 is the right angle tooth, the hypotenuse of right angle tooth 10a is positioned at the top, right-angle side is positioned at the below, tooth 7a on the corresponding gear 7 is the right angle tooth, and the right-angle side of the right angle tooth 7a on the gear 7 is positioned at the top, hypotenuse is positioned at the below.Shown in Fig. 2 a Fig. 2 b, during actual the use, gear 7 band movable reels 2 rotate, and the blinds stay cord that is driven by reel 2 drives the blinds upset on the shutter or directly drives the blinds upset, to realize the blinds folding.

As shown in Figure 5, the device of rotation driving 3 of single dragline type is by the wherein part of pedestal that is fixed on stay cord rotating disk box 3a(on the Curtain rod 1 and consists of the device of rotation driving 3 of single dragline type), rotation is arranged on the stay cord rotating disk 3c that is wound with stay cord 12 in the stay cord rotating disk box 3a, the one-way clutch 6 that links together with stay cord rotating disk 3c consists of, be provided with backrush spring 3e between stay cord rotating disk 3c and stay cord rotating disk box 3a, one-way clutch 6 also can be to comprise the cavity 6d that is arranged on the stay cord rotating disk box 3a axle center A, be arranged on the stay cord rotating disk 3c and be positioned at driving shaft 6e on the stay cord disk axes A, be arranged on the power transmission shaft 6f in the cavity 6d, be arranged on the interior power transmission shaft 6f external surface of driving shaft 6e external surface and cavity 6d and the driving spring 6g on the cavity 6d inner surface, the external diameter of power transmission shaft 6f in the cavity 6d is not more than the external diameter of driving shaft 6e, driving spring 6g and driving shaft 6e, the stressed joint of cavity 6d inner surface, power transmission shaft 6f passes outside the cavity 6d and links together by connecting axle 17 and curtain reel 2, and gear 7 is arranged on the device of rotation driving 3 interior side external surfaces of single dragline type.When the device of rotation driving of the single dragline type of this kind is worked, need the certain distance of stay cord 12 pullings just can make clutch operating, band movable reel 2 rotates.Like this, as long as the displacement of stay cord 12 pulling pull bar tooth bars 4 less than stay cord 12 drive that reels 2 begin to rotate apart from the time, just can realize that gear 7 rotates and the reel rotation, when even gear 7 rotates, because clutch is in released state, so reel 2 drives connecting axle 17, power transmission shaft 6f rotates and can not drive driving shaft 6e rotation, drives the situation of mutually wrestling so stay cord can not occur.

Be provided with shell 24 is positioned at device of rotation driving 3 outsides of single dragline type with protection gear 7, pull bar tooth bar 4 etc. member.

When the casement of reeling when reel is the shutter window cord (such as Fig. 2 a, shown in Fig. 2 b), gear 7 rotates adapter sleeve 23 on the external surface that is arranged on clutch body 3g and that be connected with reel 2 and reel realization interlock by being connected to, be engaged in and the revolution releasing device be set (such as Fig. 6 on the reel, shown in Figure 7, revolution releasing device 5 is by the sleeve 5a that is connected on the Curtain rod 1, the power transmission shaft 17 that passes through that is arranged in the sleeve 5a consists of with the quill 5b that rotating shaft 6a links together, power transmission shaft 17 cross-under that are connected with cord winder 4 are on quill 5b, sleeve 5a inside wall is provided with

guide groove

5c, 5d is provided with logical slideway 5e from beginning to end along quill 5b surface, between guide groove 5c and slideway 5e, be provided with ball 5f, show such as Fig. 7,5d is provided with logical slideway 5e from beginning to end along quill 5b surface, between guide groove 5c and slideway 5e, be provided with ball 5f, slideway 5e is by a group or more left and right sides slideway 5e1,5e2, middle V-arrangement slideway 5e3 consists of, at left slideway 5e1, one of them direction of middle V-arrangement slideway 5e3 is provided with the right slideway 5e2 that leads respectively, the targeting port 5e4 of left slideway 5e1,5e5, the targeting port 5e6 of V-arrangement slideway 5e3 in the middle of the right slideway 5e2 of another direction is provided with guiding), just can realize the object of the invention, its course of work is such, device of rotation driving 3 by single dragline type makes 5 actions of revolution releasing device, make the shutter window cord 26 that is wound on the reel 2 under the effect of deadweight, discharge from reel, at this moment, gear 7 rotates with reel 2, after shutter window cord 26 all discharges, determined by shutter window cord 26 structures, shutter window cord 26 can not opened automatically, only be rotated further reel 2, blinds 25 is horizontal, blinds 25 is opened (shown in Fig. 2 b), at this moment, stay cord is swung back the upright position, block is positioned on the horizontally disposed prong of pull bar, spur by a small margin stay cord, mobile by a small margin by block pulling pull bar tooth bar, just can drive reel 2 rotates, blinds 25 is opened, during rolling shutter window cord 26, the oblique pull stay cord, make block leave prong, just can be with movable reel 2 counter-rotatings, on shutter window cord 26 rollback reels 2.Tenesmus when discharging in order to slow down shutter window cord 26 is impacted, and can adopt reducing gear 20 to slow down.

Be provided with projection 14 at pull bar tooth bar 4, the frame 1 below projection 14 is provided with positive stop 15.Returning spring 11 is connected to 21 of the backstays of projection 14 and frame 1.

Be provided with arc-shaped notch 16 on the pull bar 9 below the tooth bar 10, the shape of arc-shaped notch 16 is corresponding with the shape of gear 6 sides, and the positive stop 15 on the frame 1 is the rollers that rotate along the rotating shaft 18 on the frame 1, and roller 15 leans against on the lateral surface of pull bar 9.

As shown in the figure, the lower end of pull bar 9 is provided with cross bar 19, and horizontally disposed prong 8 is positioned at the front of cross bar 19.During use, as long as stay cord 12 breaks away from horizontally disposed prong 8 and toward side oblique pull stay cord 12, stay cord 12 just can not fall in the sphere of action of horizontally disposed prong 8, guarantees carrying out smoothly of stay cord pulling.

Such as Fig. 8 a, 8b, shown in the 8c, in order to guarantee that the reel 2 after pull bar tooth bar 4 drives can not turn round (as shown in Figure 9, after shutter window cord 26 discharges from reel fully, also need to make reel 2 to be rotated further, make and shutter window cord 26 turn to the minimum point 32 that is higher than reel with tie point 31 reel 2, the blinds 25 of shutter window cord 26 is opened, when if shutter window cord 26 is not heavy, the frictional force of drive unit self is enough to overcome the gravity of shutter window cord 26 self, open to keep blinds 25, but, when shutter window cord 26 gravity during greater than the frictional force of drive unit self, can make the reel counter-rotating, blinds 25 is closed again), be provided with only face 29 on the pull bar 9 of pull bar tooth bar 4, be provided with positioning sliding block 27 on the frame 1 of corresponding only

face

29,1 of positioning sliding block 27 and frame are provided with spring 28, and stay cord 12 is slidingly connected at (stay cord 12 slides through positioning sliding block 27) on the positioning sliding block 27.During use, when stay cord 12 pulling pull bar tooth bars 4 band movable reels 2 rotate, the stay cord 12 drive positioning sliding blocks 27 of tensioning leave the sphere of action of ending face 29 on the pull bar 9, make pull bar tooth bar 4 can move down smoothly band movable reel 2 and rotate (shown in Fig. 8 b), after unclamping stay cord 12, after positioning sliding block 27 has broken away from the effect of stay cord 12, under the effect of spring 28, the sphere of action of ending face 29 and the gear that are advanced to pull bar 9 end on the face 29, pull bar tooth bar 4 can not be resetted, and the tooth bar 10 on the pull bar tooth bar 4 is located reel 2 by gear 7, like this, just can prevent reel 2 revolutions, guarantee open (shown in Fig. 8 c) of blinds 25.When closing blinds 25, as long as with stay cord 12 tensionings and leave prong 8 on the pull bar tooth bar 4, make positioning sliding block 27 leave the only face 29 of pull bar tooth bar 4, pull bar tooth bar 4 resets under the effect of returning spring 11, make reel 2 be in free state together with gear 7, under the effect of

stay cord

12 or 26 deadweights of shutter window cord, blinds 25 is closed.

Here, be provided with more than one right-angled triangle tooth 30 on the pull bar 9, face 29 till the right angle face of the level of right-angled triangle, the right angle face 29 of this level is towards upper.

Be provided with slide rail 33 in frame 1 level, positioning sliding block 27 is slidingly arranged on the slide rail 33.

Claims

A kind of curtain is with single stay cord drive unit, it is characterized in that comprising frame, be arranged on the frame or be arranged on member that frame is fixedly connected with on reel, drive the stay cord that reel rotates, rotation be arranged on the frame or rotate be arranged on member that frame is fixedly connected with on and be positioned near the stay cord gear, be arranged on the frame or be arranged on member that frame is fixedly connected with on and the pull bar tooth bar that is positioned at the gear next door, the pull bar tooth bar comprises the pull bar with horizontally disposed prong, be positioned at the tooth bar of pull bar upper end, between frame and pull bar tooth bar or between the member that is fixedly connected with frame and pull bar tooth bar, be provided with returning spring, stay cord on the horizontally disposed prong of pull bar is fixed with block, tooth on the tooth bar is the right angle tooth, the hypotenuse of right angle tooth is positioned at the top, right-angle side is positioned at the below, tooth on the corresponding gear is the right angle tooth, and the right-angle side of the right angle tooth on the gear is positioned at the top, hypotenuse is positioned at the below.
Curtain according to claim 1 is characterized in that being provided with projection at the pull bar tooth bar with single stay cord drive unit, on the frame below projection or the member that is fixedly connected with frame be provided with positive stop.
Curtain according to claim 1 and 2 is with single stay cord drive unit, it is characterized in that being provided with arc-shaped notch on the pull bar below the tooth bar, the shape of arc-shaped notch is corresponding with the shape of gear side, on the frame or with positive stop on the member that frame is fixedly connected be the roller that rotates along on the frame or with the rotating shaft on the member that frame is fixedly connected with, roller leans against on the lateral surface of pull bar.
Curtain according to claim 1 and 2 is characterized in that with single stay cord drive unit the lower end of pull bar is provided with cross bar, and horizontally disposed prong is positioned at the front of cross bar.
Curtain according to claim 3 is characterized in that with single stay cord drive unit the lower end of pull bar is provided with cross bar, and horizontally disposed prong is positioned at the front of cross bar.
According to claim 1 and 2 or 5 described curtain with single stay cord drive unit, it is characterized in that the member that is fixedly connected with frame is the device of rotation driving that drives single dragline type of reel rotation, gear rotates on the inboard pedestal external surface of the device of rotation driving that is arranged on single dragline type and with reel and is connected.
Curtain according to claim 3 is with single stay cord drive unit, it is characterized in that the member that is fixedly connected with frame is the device of rotation driving that drives single dragline type of reel rotation, gear rotates on the inboard pedestal external surface of the device of rotation driving that is arranged on single dragline type and with reel and is connected.
Curtain according to claim 4 is with single stay cord drive unit, it is characterized in that the member that is fixedly connected with frame is the device of rotation driving that drives single dragline type of reel rotation, gear rotates on the inboard pedestal external surface of the device of rotation driving that is arranged on single dragline type and with reel and is connected.
. curtain according to claim 6 is characterized in that being provided with on the reel revolution releasing device with single stay cord drive unit.
. according to claim 7 or 8 described curtain with single stay cord drive unit, it is characterized in that being provided with on the reel revolution releasing device.
According to claim 1 and 2 or 5 or 7 or 8 or 9 described single stay cord drive units, it is characterized in that being provided with on the pull bar of pull bar tooth bar only face, be provided with positioning sliding block on the frame of corresponding only face, be provided with spring between positioning sliding block and frame, stay cord is slidingly connected on the positioning sliding block.
Single stay cord drive unit according to claim 3 is characterized in that being provided with on the pull bar of pull bar tooth bar only face, is provided with positioning sliding block on the corresponding frame of ending face, is provided with spring between positioning sliding block and frame, and stay cord is slidingly connected on the positioning sliding block.
Single stay cord drive unit according to claim 4 is characterized in that being provided with on the pull bar of pull bar tooth bar only face, is provided with positioning sliding block on the corresponding frame of ending face, is provided with spring between positioning sliding block and frame, and stay cord is slidingly connected on the positioning sliding block.
Single stay cord drive unit according to claim 6 is characterized in that being provided with on the pull bar of pull bar tooth bar only face, is provided with positioning sliding block on the corresponding frame of ending face, is provided with spring between positioning sliding block and frame, and stay cord is slidingly connected on the positioning sliding block.
.

Single stay cord drive unit according to claim 10 is characterized in that being provided with on the pull bar of pull bar tooth bar only face, is provided with positioning sliding block on the corresponding frame of ending face, is provided with spring between positioning sliding block and frame, and stay cord is slidingly connected on the positioning sliding block.
Single stay cord drive unit according to claim 11 is characterized in that being provided with on the pull bar more than one right-angled triangle tooth, face till the right angle face of the level of right-angled triangle, and the right angle of this level is facing to upper.
According to claim 12 or 13 or 14 or 15 described single stay cord drive units, it is characterized in that being provided with on the pull bar more than one right-angled triangle tooth, face till the right angle face of the level of right-angled triangle, the right angle of this level is facing to upper.
According to claim 12, or 13 or 14 or 15 or 16 described single stay cord drive units, it is characterized in that being provided with slide rail in the frame level, positioning sliding block is slidingly arranged on the slide rail.
Single stay cord drive unit according to claim 11 is characterized in that being provided with slide rail in the frame level, and positioning sliding block is slidingly arranged on the slide rail.
Single stay cord drive unit according to claim 17 is characterized in that being provided with slide rail in the frame level, and positioning sliding block is slidingly arranged on the slide rail.